首页
产品
黄页
商标
征信
会员服务
注册
登录
全部
|
企业名
|
法人/股东/高管
|
品牌/产品
|
地址
|
经营范围
发明名称
Railway traffic controlling apparatus
摘要
申请公布号
US2279971(A)
申请公布日期
1942.04.14
申请号
US19400365886
申请日期
1940.11.16
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
CROOKS RALPH K.
分类号
B61L3/22
主分类号
B61L3/22
代理机构
代理人
主权项
地址
您可能感兴趣的专利
A hearing aid adapted fordetecting brain waves and a method for adapting such a hearing aid
Numerical method of calculating heat, mass, chemical and electric transport for three-dimensional porous solid
Method of selecting a frame from motion video
Fluorescent membrane intercalating probes and methods for their use
Method for laying a pipeline on the seabed and a pipeline installation device
Wheel isolator coupling
Microcapsule and production method thereof
BOMBA DE CALOR PARA LA PRODUCCION DE AGUA CALIENTE SANITARIA CON APORTACION SIMULTANEA DE AGUA FRIA PARA LA REFRIGERACION
Novel 2,3-dihydro-1H-imidazo(1,2-a)pyrimidin-5-one derivatives, preparation thereof, and pharmaceutical use thereof
Measuring device for measuring consistency of cement slurry for a consistometer
Plastic plate for lining concrete components
Systems and methods for producing multilayered particles, fibers and sprays and methods for administering the same
METHOD FOR TREATMENT OF CROP WITH AN ENCAPSULATED PESTICIDE
METODO PARA PRODUCIR COMPOSICIONES TERMOPLASTICAS MOLDEABLES.
建设机具的铲齿改良结构
一种游泳气囊背心
脑瘤放疗模拟定位尺
一种门窗用外平开传动锁闭器
具有讯号模块的无线控制装置
一种用于检测洗净器泵性能的装置
